Gas-range.



No. 866,098. i PATENTED SEPT. 17, 1907. J. E. WALKER.

GAS RANGE. APPLIUATION FILED JAN. 4. 1906.

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JAMES Il. WALKER, OF MILWAUKEE, WISCONSIN.

GAS-RANGE Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed January 4,1906. Serial No. 294,514.

To all whom it may concern:

Be it known that I, JAMES H. WALKER, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Gas-ltanges, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

The main objects of this invention are to increase the cooking or heating capacity of gas ranges of any given size; to economize heat and fuel; to distribute the heat of the burners and increase the area available for cooking or heating purposes and thus save time and labor; to prevent deposition of free carbon or soot on the top plate and on vessels or utensils placed thereon and consequent reduction of the heating effect of the burners thereon; to avoid smothering the burner flames with carbonio acid gas or products of combusv tion; and generally to improve the construction and operation of stoves of this class.

It consists in certain novel features of construction and in the peculiar arrangement and combinations of parts as hereinafter particularly described and defined in the claims.

In the accompanying drawing like letters designate the `same parts in the several figures.

Figure I is a plan View of a part of a gas range to which the improvements constituting the present invention are applied, parts being broken away; Fig. 2 is a vertical section on the line 2 2, Fig. l; and Fig. 3 is an enlarged section on the line 3 3, Fig. l, of one of the burners and associated parts of the range.

The perforated top plate constituting the main feature of the invention is preferably made in separately removable sections a a, which are fitted into and flush with the top frame b of the range. It is made perfectly flat and smooth both on the upper and under sides, to afford a support throughout its entire area for variout kinds of household utensils and to avoid recesses on the under side which would tend to retain the inert gases produced by the burners and thus smother or check the burner flames and interfere with the heating of the top.

The range is shown as provided with straight tubular burners c,arrranged at intervals across the range from front to rear just below the perforated top plate, but burners of any other suitable form may be used.

At their front ends the burners have drop connections d with the gas supply header or pipe e, extending across one side of the range and provided with the usual nipples and cocks f for delivering and controlling the supply of gas to the several burners. These drop connections d are provided at their lower ends around the gas supply nipples with adjustable air inlet openings g for supplying the requisite admixture of air for the proper operation of the burners. By locating the inlets of the gas and air supply connections of the burners below or out of line with the bores or main gas passages of the burners and forming each connection with two or more abrupt bends or curves, the back firing of the burners and smoky flames whichwould result therefrom and deposit free carbon or soot upon the under side of the perforated top and upon the utensils placed thereon, are avoided.

The abrupt bends or curves in the gas supply passage oi cach burner check the force of the explosion when the burner is lighted with an improper mixture of gas and air, and prevent the flame from reaching and lighting the gas where it enters the burner connection from the header or pipe c. This provision in the construction of the burners and in the arrangement of their gas supply connections not only prevents the deposit on the under side of the top plate of free carbon or soot which would interfere with its readily absorbing heat from the burners, but also insures the most efficient operation of the burners.

The holes i in the top plate are arranged to correspond with the arrangement of the openings in the burners and to afford separate and ample openings for the ventilation of the several `j ets or parts of the burner Hames so that they will burn freely and evenly without interference with each other and the carbonio acid gas and other products of combustion will freely escape without interfering with the absorption of heat by the top from the burner flames.

It will be understood of course that the arrangement of these holes will be varied according to the form and arrangement of the openings in the gas burners which are used in the range. l

On the under side of the plate the holes h, which are clean cut, are also preferably.countersunk or enlarged, as shown in Fig. 3, to facilitate the escape of the inert gases and products of lcombustion from the space below the top plate around the burners. The perforated top is preferably made of polished steel plates and the holes therein are of such size and arrangement that they will not interfere with the ready conduction and distribution of the heat produced by the burners throughout the entire area of the top, so that with a single burner or a few burners in operation, a much larger heating area for cooking and other culinary or household purposes, is made available. As many vessels or utensils as can be arranged together on the top plate can be simultaneously and effectively heated with one or as many burners as may be required to keep the top plate at the desired temperature. struction it is not necessary to place a kettle or other cooking utensil directly and centrally over a burner in direct contact with the flame thereof,` according to the usual practice with ranges having open tops or grids which determine and limit the location of cooking or other utensils thereon with relation to the burners.

With a perforated top of this con-v With the top herein shown and described upward currents of cool or partially heated air Which Would otherwise be produced by the burners, are prevented from coming in Contact with the vessels or other utensils to be heated, as in ranges of the usual construction. The provision which this top affords for distributing the heat of the burners over a larger area, to a greater number of cooking vessels or other utensils, effects a corresponding saving of time7 labor and hiel.

sorb and distribute the heat of the burner [lame having smooth upper and under surfaces and clean eut holes arranged to correspond with the burner openings and afford -ventilation for each jet or part of the burner flame, substantially as described.

In a gas range the combination with a gas burner having a number ei? jet openings for the escape of gas supplying the flame, of an exposed perforated lnetal top plate arranged to absorb and distribute the heat of the burner Haine and having smooth lat upper and under surfaces and clean cut holes arranged to correspond with the ar` rangement of the burner openings and to afford separate exits for the ventilation of the several jets or parts of the burner flame, substantially as described.

l. In a gas range the combination of a tubular burner having a series of jet openings for the escape of gas suppulyiu;y the flame and a drop gas supply connection out of line with the bore of the burner, and a perforated metal top plate arranged over the burner in position to absorb and distribute the heat of the burner name and having Ventilating' holes arranged to correspond With the burner openings and to atord separate exits for the several jets of the burner flame, substantially as described.

In witness whereof I hereto atlix my signature in presence of two witnesses.

JAMES H, WALKER.

Witnesses Cnas. L. Goss, Guxuvmvu l. Goss. 

